gridview: Revise constructors

Make both gtk_grid_view_new and gtk_grid_view_new_with_factory
take a model as first argument, and make all arguments
allow-none and transfer full.

Update all callers.

demos/gtk-demo/listview_clocks.c

@@ -462,7 +462,7 @@ do_listview_clocks (GtkWidget *do_widget)
     {
       GtkWidget *gridview, *sw;
       GtkListItemFactory *factory;
-      GtkNoSelection *selection;
+      GListModel *model;
 
       /* This is the normal window setup code every demo does */
       window = gtk_window_new ();
@@ -484,14 +484,12 @@ do_listview_clocks (GtkWidget *do_widget)
       factory = gtk_signal_list_item_factory_new ();
       g_signal_connect (factory, "setup", G_CALLBACK (setup_listitem_cb), NULL);
 
-      gridview = gtk_grid_view_new_with_factory (factory);
+      model = G_LIST_MODEL (gtk_no_selection_new (create_clocks_model ()));
+      gridview = gtk_grid_view_new_with_factory (model, factory);
       gtk_scrollable_set_hscroll_policy (GTK_SCROLLABLE (gridview), GTK_SCROLL_NATURAL);
       gtk_scrollable_set_vscroll_policy (GTK_SCROLLABLE (gridview), GTK_SCROLL_NATURAL);
 
-      selection = gtk_no_selection_new (create_clocks_model ());
-      gtk_grid_view_set_model (GTK_GRID_VIEW (gridview), G_LIST_MODEL (selection));
       gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), gridview);
-      g_object_unref (selection);
     }
 
   if (!gtk_widget_get_visible (window))

demos/gtk-demo/listview_colors.c

@@ -663,7 +663,7 @@ create_color_grid (void)
   GtkWidget *gridview;
   GtkListItemFactory *factory;
 
-  gridview = gtk_grid_view_new ();
+  gridview = gtk_grid_view_new (NULL);
   gtk_scrollable_set_hscroll_policy (GTK_SCROLLABLE (gridview), GTK_SCROLL_NATURAL);
   gtk_scrollable_set_vscroll_policy (GTK_SCROLLABLE (gridview), GTK_SCROLL_NATURAL);
 
@@ -950,7 +950,7 @@ do_listview_colors (GtkWidget *do_widget)
 
       factory = gtk_signal_list_item_factory_new ();
       g_signal_connect (factory, "setup", G_CALLBACK (setup_selection_listitem_cb), NULL);
-      selection_view = gtk_grid_view_new_with_factory (factory);
+      selection_view = gtk_grid_view_new_with_factory (NULL, factory);
       gtk_widget_add_css_class (selection_view, "compact");
       gtk_grid_view_set_max_columns (GTK_GRID_VIEW (selection_view), 200);
       gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), selection_view);

gtk/gtkgridview.c

@@ -1177,52 +1177,65 @@ gtk_grid_view_init (GtkGridView *self)
 
 /**
  * gtk_grid_view_new:
+ * @model: (allow-none) (transfer full): the model to use, or %NULL
  *
- * Creates a new empty #GtkGridView.
+ * Creates a new #GtkGridView.
  *
  * You most likely want to call gtk_grid_view_set_factory() to
- * set up a way to map its items to widgets and gtk_grid_view_set_model()
- * to set a model to provide items next.
+ * set up a way to map its items to widgets next.
  *
  * Returns: a new #GtkGridView
  **/
 GtkWidget *
-gtk_grid_view_new (void)
+gtk_grid_view_new (GListModel *model)
 {
-  return g_object_new (GTK_TYPE_GRID_VIEW, NULL);
+  GtkWidget *result;
+
+  g_return_val_if_fail (model == NULL || G_IS_LIST_MODEL (model), NULL);
+
+  result = g_object_new (GTK_TYPE_GRID_VIEW,
+                         "model", model,
+                         NULL);
+
+  /* consume the reference */
+  g_clear_object (&model);
+
+  return result;
 }
 
 /**
  * gtk_grid_view_new_with_factory:
- * @factory: (transfer full): The factory to populate items with
+ * @model: (allow-none) (transfer full): the model to use, or %NULL
+ * @factory: (allow-none) (transfer full): The factory to populate items with, or %NULL
  *
  * Creates a new #GtkGridView that uses the given @factory for
  * mapping items to widgets.
  *
- * You most likely want to call gtk_grid_view_set_model() to set
- * a model next.
- *
  * The function takes ownership of the
  * argument, so you can write code like
  * ```
- *   grid_view = gtk_grid_view_new_with_factory (
- *     gtk_builder_list_item_factory_newfrom_resource ("/resource.ui"));
+ *   grid_view = gtk_grid_view_new_with_factory (create_model (),
+ *     gtk_builder_list_item_factory_new_from_resource ("/resource.ui"));
  * ```
  *
  * Returns: a new #GtkGridView using the given @factory
  **/
 GtkWidget *
-gtk_grid_view_new_with_factory (GtkListItemFactory *factory)
+gtk_grid_view_new_with_factory (GListModel         *model,
+                                GtkListItemFactory *factory)
 {
   GtkWidget *result;
 
   g_return_val_if_fail (GTK_IS_LIST_ITEM_FACTORY (factory), NULL);
 
   result = g_object_new (GTK_TYPE_GRID_VIEW,
+                         "model", model,
                          "factory", factory,
                          NULL);
 
-  g_object_unref (factory);
+  /* consume the references */
+  g_clear_object (&model);
+  g_clear_object (&factory);
 
   return result;
 }

gtk/gtkgridview.h

@@ -48,9 +48,10 @@ GDK_AVAILABLE_IN_ALL
 GType           gtk_grid_view_get_type                          (void) G_GNUC_CONST;
 
 GDK_AVAILABLE_IN_ALL
-GtkWidget *     gtk_grid_view_new                               (void);
+GtkWidget *     gtk_grid_view_new                               (GListModel             *model);
 GDK_AVAILABLE_IN_ALL
-GtkWidget *     gtk_grid_view_new_with_factory                  (GtkListItemFactory     *factory);
+GtkWidget *     gtk_grid_view_new_with_factory                  (GListModel             *model,
+                                                                 GtkListItemFactory     *factory);
 
 GDK_AVAILABLE_IN_ALL
 GListModel *    gtk_grid_view_get_model                         (GtkGridView            *self);

tests/testlistdnd.c

@@ -342,23 +342,17 @@ main (int argc, char *argv[])
   gtk_scrolled_window_set_has_frame (GTK_SCROLLED_WINDOW (sw), TRUE);
   gtk_stack_add_titled (GTK_STACK (stack), sw, "grid", "GtkGridView");
 
-  grid = gtk_grid_view_new ();
-  gtk_grid_view_set_min_columns (GTK_GRID_VIEW (grid), 20);
-  gtk_grid_view_set_max_columns (GTK_GRID_VIEW (grid), 20);
-
-  gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), grid);
-
   model = create_model (0, 400, 1, FALSE);
-  gtk_grid_view_set_model (GTK_GRID_VIEW (grid), model);
-  g_object_unref (model);
-
   factory = gtk_signal_list_item_factory_new ();
   g_signal_connect (factory, "setup", G_CALLBACK (setup_item), NULL);
   g_signal_connect (factory, "bind", G_CALLBACK (bind_item), NULL);
   g_signal_connect (factory, "unbind", G_CALLBACK (unbind_item), NULL);
 
-  gtk_grid_view_set_factory (GTK_GRID_VIEW (grid), factory);
-  g_object_unref (factory);
+  grid = gtk_grid_view_new_with_factory (model, factory);
+  gtk_grid_view_set_min_columns (GTK_GRID_VIEW (grid), 20);
+  gtk_grid_view_set_max_columns (GTK_GRID_VIEW (grid), 20);
+
+  gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), grid);
 
   /* list */
   sw = gtk_scrolled_window_new ();